MVinOZ Posted October 16, 2014 Share Posted October 16, 2014 I'm looking at getting some adapters made to install the BMW S1000RR rear shock into the VFR, it's a very nice Sachs unit with high & low speed compression damping & rebound damping. The shock itself can be had for ~ $100US in the states there, about $1-200 in Australia. That, plus the price of the adaptor would make it a pretty cheap upgrade from stock. I have been in touch with a machinist & the one off cost is prohibitive, but if we can get a few on board it will be cost effective. I haven't verified that it will work int the VFR _YET_ but if there's interest, I'll get on it! (Oh, if anyone local AU or US knows someone who can make the adaptors, let me know.) Link to comment Share on other sites More sharing options...
Member Contributer Switchblade Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 What about the spring? looks small . Link to comment Share on other sites More sharing options...
Member Contributer Duc2V4 Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 Talk to Jamie Daugherty I'm sure he'd know if not be able to do it for you, he modifies shocks of different bikes for use on VFRs. Send him and email or a PM www.Daughertymotorsports.com Link to comment Share on other sites More sharing options...
MVinOZ Posted October 16, 2014 Author Share Posted October 16, 2014 What about the spring? looks small . Length, width or spring rate? Length is shorter & the bottom mount is different, the adapter will bolt into the bottom the make it the right length & right connection to the bottom mount. Width is roughly the same & spring rate is 8.5kg/mm I believe. Link to comment Share on other sites More sharing options...
Member Contributer mello dude Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 A BMW shock for a hundred bucks? Probly not..... Link to comment Share on other sites More sharing options...
MVinOZ Posted October 16, 2014 Author Share Posted October 16, 2014 You'd be suprised mate, I just picked one up here in AU for $110 shipped, the later 2012 versions had an upgrade & fetch a bit more, but they start around around $75 on eBay US. Here's two: http://www.ebay.com.au/itm/10-11-2010-2011-BMW-S1000-S1000RR-Rear-Shock-Coil-Dogbone-Linkage-Z065-/271186277705?pt=Motorcycles_Parts_Accessories&hash=item3f23f63549 http://www.ebay.com.au/itm/S1000RR-BMW-Rear-Shock-Spring-Linkage-10-11-/181535141551?pt=Motorcycles_Parts_Accessories&hash=item2a44566eaf I saw a zero mile one go for about $120 the other week! Link to comment Share on other sites More sharing options...
Member Contributer Switchblade Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 There was 3 of them on FleeBay last night. What about the spring? looks small . Length, width or spring rate? Length is shorter & the bottom mount is different, the adapter will bolt into the bottom the make it the right length & right connection to the bottom mount. Width is roughly the same & spring rate is 8.5kg/mm I believe. Yeap . I know the CBR spring has to be changed. Link to comment Share on other sites More sharing options...
Member Contributer YoshiHNS Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 I was looking at the KTM RC8 shock. With the huge spring rate difference and a questionable reservoir location, decided it wasn't worth losing the $150 shipped. Link to comment Share on other sites More sharing options...
Member Contributer Duc2V4 Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 You will have to factor in the cost of rebuilding it along with the modification of the mount. Most likely the valving, as well as spring rate, will not be the same for the VFR and/or your riding weight. However, looking at the top of the BMW shock looks like the reservoir will be in the way of mounting. That being said, JD uses the CBR600F4 shock (remote reservoir) and those seem to be cheap and plentiful on ebay. Even cheaper too... http://www.ebay.com.au/itm/GOOD-REAR-SHOCK-01-02-03-04-05-06-honda-cbr600-F4i-cbr600f4-f4-back-suspension-/271636684115?pt=Motorcycles_Parts_Accessories&hash=item3f3ecedd53 http://www.ebay.com.au/itm/99-HONDA-CBR600-CBR-600-F4-SHOCK-6060-/351182406234?pt=Motorcycles_Parts_Accessories&hash=item51c41a425a http://www.ebay.com.au/itm/99-Honda-CBR-600-F4-OEM-Rear-Shock-/170837835171?pt=Motorcycles_Parts_Accessories&hash=item27c6ba7da3 Link to comment Share on other sites More sharing options...
Tamworth Posted October 16, 2014 Share Posted October 16, 2014 This shock is considered one of the worst. Lots for sale because nobody wants them. $100 will not buy a shock any better than a completely blown out stock shock. Don't waste your money on these. The actual s1000rr shock is quite a bit more expensive. A bit of a scam actually Link to comment Share on other sites More sharing options...
MVinOZ Posted October 16, 2014 Author Share Posted October 16, 2014 I was looking at the KTM RC8 shock. With the huge spring rate difference and a questionable reservoir location, decided it wasn't worth losing the $150 shipped. Yeah, that's a WP unit, very expensive over here! I have eyed that one off also. You will have to factor in the cost of rebuilding it along with the modification of the mount. Most likely the valving, as well as spring rate, will not be the same for the VFR and/or your riding weight. However, looking at the top of the BMW shock looks like the reservoir will be in the way of mounting. That being said, JD uses the CBR600F4 shock (remote reservoir) and those seem to be cheap and plentiful on ebay. Even cheaper too... http://www.ebay.com.au/itm/GOOD-REAR-SHOCK-01-02-03-04-05-06-honda-cbr600-F4i-cbr600f4-f4-back-suspension-/271636684115?pt=Motorcycles_Parts_Accessories&hash=item3f3ecedd53 http://www.ebay.com.au/itm/99-HONDA-CBR600-CBR-600-F4-SHOCK-6060-/351182406234?pt=Motorcycles_Parts_Accessories&hash=item51c41a425a http://www.ebay.com.au/itm/99-Honda-CBR-600-F4-OEM-Rear-Shock-/170837835171?pt=Motorcycles_Parts_Accessories&hash=item27c6ba7da3 Yes, but those shock are all 14+ years old, the oldest BMW shock around are 5. The aim is to able to do the swap without any modification to the shock, I'm not sure if that will actually be doable yet. This shock is considered one of the worst. Lots for sale because nobody wants them. $100 will not buy a shock any better than a completely blown out stock shock. Don't waste your money on these. The actual s1000rr shock is quite a bit more expensive. A bit of a scam actually First I've heard about it. What do you mean the 'actual' S1000RR shock is more expensive? What do you imagine these come off? I've ridden the S1000RR around Laguna Seca with stock suspension & it was marvelous. Obviously there are differences in the linkage, weight & geometry of the two bikes, but I think it's worth trying out. Anybody else curious? It's just money, right? Link to comment Share on other sites More sharing options...
Member Contributer Duc2V4 Posted October 16, 2014 Member Contributer Share Posted October 16, 2014 You will have to factor in the cost of rebuilding it along with the modification of the mount. Most likely the valving, as well as spring rate, will not be the same for the VFR and/or your riding weight. However, looking at the top of the BMW shock looks like the reservoir will be in the way of mounting. That being said, JD uses the CBR600F4 shock (remote reservoir) and those seem to be cheap and plentiful on ebay. Even cheaper too... http://www.ebay.com.au/itm/GOOD-REAR-SHOCK-01-02-03-04-05-06-honda-cbr600-F4i-cbr600f4-f4-back-suspension-/271636684115?pt=Motorcycles_Parts_Accessories&hash=item3f3ecedd53 http://www.ebay.com.au/itm/99-HONDA-CBR600-CBR-600-F4-SHOCK-6060-/351182406234?pt=Motorcycles_Parts_Accessories&hash=item51c41a425a http://www.ebay.com.au/itm/99-Honda-CBR-600-F4-OEM-Rear-Shock-/170837835171?pt=Motorcycles_Parts_Accessories&hash=item27c6ba7da3 Yes, but those shock are all 14+ years old, the oldest BMW shock around are 5. The aim is to able to do the swap without any modification to the shock, I'm not sure if that will actually be doable yet. That maybe true but if you are rebuilding it, which you should be doing anyway IMO, then basically it will be fresh inside. All of the seals, spring, oil and nitrogen will all be new. Unless the body of the shock is in real bad condition, I don't see it being an issue being 14 years old. Even if the shock was off of a 2001, your bike is a 2002 (at least according to your avatar info), not much of a difference. I still say that the BMW shock's reservoir will most likely be the hindering factor. As it is, the 929 shock, which has a similar configuration i.e.The reservoir at the top of the shock, has to sit very close to the rear cylinder and that reservoir is much closer to the eyelet than the BMW shock. As much as I appreciate saving money, trying to force something to work often cost you a lot more than what you could have work right off the bat with just a little money put into it. Link to comment Share on other sites More sharing options...
Tamworth Posted October 16, 2014 Share Posted October 16, 2014 I was looking at the KTM RC8 shock. With the huge spring rate difference and a questionable reservoir location, decided it wasn't worth losing the $150 shipped. Yeah, that's a WP unit, very expensive over here! I have eyed that one off also. You will have to factor in the cost of rebuilding it along with the modification of the mount. Most likely the valving, as well as spring rate, will not be the same for the VFR and/or your riding weight. However, looking at the top of the BMW shock looks like the reservoir will be in the way of mounting. That being said, JD uses the CBR600F4 shock (remote reservoir) and those seem to be cheap and plentiful on ebay. Even cheaper too... http://www.ebay.com.au/itm/GOOD-REAR-SHOCK-01-02-03-04-05-06-honda-cbr600-F4i-cbr600f4-f4-back-suspension-/271636684115?pt=Motorcycles_Parts_Accessories&hash=item3f3ecedd53 http://www.ebay.com.au/itm/99-HONDA-CBR600-CBR-600-F4-SHOCK-6060-/351182406234?pt=Motorcycles_Parts_Accessories&hash=item51c41a425a http://www.ebay.com.au/itm/99-Honda-CBR-600-F4-OEM-Rear-Shock-/170837835171?pt=Motorcycles_Parts_Accessories&hash=item27c6ba7da3 Yes, but those shock are all 14+ years old, the oldest BMW shock around are 5. The aim is to able to do the swap without any modification to the shock, I'm not sure if that will actually be doable yet. This shock is considered one of the worst. Lots for sale because nobody wants them. $100 will not buy a shock any better than a completely blown out stock shock. Don't waste your money on these. The actual s1000rr shock is quite a bit more expensive. A bit of a scam actually First I've heard about it. What do you mean the 'actual' S1000RR shock is more expensive? What do you imagine these come off? I've ridden the S1000RR around Laguna Seca with stock suspension & it was marvelous. Obviously there are differences in the linkage, weight & geometry of the two bikes, but I think it's worth trying out. Anybody else curious? It's just money, right? The s100rr is a fantastic bike. I can almost guarantee it's not riding on a $100 shock. Also just making an extender isn't likely enough. The shock must have a specific amount range of extension to work with the Honda Pro-Link. I do agree that for $100 anything is worth a try Link to comment Share on other sites More sharing options...
Member Contributer Switchblade Posted October 17, 2014 Member Contributer Share Posted October 17, 2014 I was looking at the KTM RC8 shock. With the huge spring rate difference and a questionable reservoir location, decided it wasn't worth losing the $150 shipped. Yeah, that's a WP unit, very expensive over here! I have eyed that one off also. You will have to factor in the cost of rebuilding it along with the modification of the mount. Most likely the valving, as well as spring rate, will not be the same for the VFR and/or your riding weight. However, looking at the top of the BMW shock looks like the reservoir will be in the way of mounting. That being said, JD uses the CBR600F4 shock (remote reservoir) and those seem to be cheap and plentiful on ebay. Even cheaper too... http://www.ebay.com.au/itm/GOOD-REAR-SHOCK-01-02-03-04-05-06-honda-cbr600-F4i-cbr600f4-f4-back-suspension-/271636684115?pt=Motorcycles_Parts_Accessories&hash=item3f3ecedd53 http://www.ebay.com.au/itm/99-HONDA-CBR600-CBR-600-F4-SHOCK-6060-/351182406234?pt=Motorcycles_Parts_Accessories&hash=item51c41a425a http://www.ebay.com.au/itm/99-Honda-CBR-600-F4-OEM-Rear-Shock-/170837835171?pt=Motorcycles_Parts_Accessories&hash=item27c6ba7da3 Yes, but those shock are all 14+ years old, the oldest BMW shock around are 5. The aim is to able to do the swap without any modification to the shock, I'm not sure if that will actually be doable yet. This shock is considered one of the worst. Lots for sale because nobody wants them. $100 will not buy a shock any better than a completely blown out stock shock. Don't waste your money on these. The actual s1000rr shock is quite a bit more expensive. A bit of a scam actually First I've heard about it. What do you mean the 'actual' S1000RR shock is more expensive? What do you imagine these come off? I've ridden the S1000RR around Laguna Seca with stock suspension & it was marvelous. Obviously there are differences in the linkage, weight & geometry of the two bikes, but I think it's worth trying out. Anybody else curious? It's just money, right? KTM looks to be a lot beefer ! Link to comment Share on other sites More sharing options...
MVinOZ Posted October 17, 2014 Author Share Posted October 17, 2014 The KTM one would be a lot easier to fit in, but I suspect the reservoir will hinder the swingarm - I have a similar Ducati one, no dice. The s100rr is a fantastic bike. I can almost guarantee it's not riding on a $100 shock. Also just making an extender isn't likely enough. The shock must have a specific amount range of extension to work with the Honda Pro-Link. I do agree that for $100 anything is worth a try The shocks on eBay are the ones BMW ship the bike with from the factory, not sure where you're coming from on that one... Just cos they're $100 on eBay doesn't make them a $100 shock. The stroke length is similar to the VFR shock OTTOMH. Link to comment Share on other sites More sharing options...
Member Contributer YoshiHNS Posted October 17, 2014 Member Contributer Share Posted October 17, 2014 KTM looks to be a lot beefer ! Close enough length, fully adjustable. WP performance. Problem is the spring rate is 1/2 of what the VFR would need at a minimum. I looked into it. If you can find the right spring, then the reservoir is still going to be an issue. Maybe if someone put a conventional swingarm on a VFR it would fit. Link to comment Share on other sites More sharing options...
MVinOZ Posted October 17, 2014 Author Share Posted October 17, 2014 If the spring is half the rate, the damping will be well off also... I am mocking up an adaptor in CAD, even adding +8mm to overall length it's going to be tight, I'm not sure it will even work out Link to comment Share on other sites More sharing options...
MVinOZ Posted October 21, 2014 Author Share Posted October 21, 2014 OK, so to elaborate on my ideas & how this came about: My other bikes is a Yamaha TRX850, which is basically a parts bin special designed to compete with Ducatis 900SS at the time. The rear shock is woeful & a company in the UK makes a spacer that allows the Yamaha R6 rear shock to bolt in. For the TRX, the shock is very well suited & a great, cheap upgrade. The best thing about the shock for my money is the high & low speed compression damping as this allows very good fine tuning of both low speed & high speed stroke. High & low speed refers to the speed the shock is working through it's stroke rather than road speed. ie, small flat bump, you can have right damping so the tyre can follow the road well, as well as the right damping for antisquat & big dips/bumps/potholes, etc. Having that adjustability is important to me & the main reason I don't want to use the CBR variant shocks. Now, the BMW unit is very similar to the R6 unit, just better quality, slightly different rates, etc, but has the same adjustability. So that's where I'm coming from on my rear shock upgrades. Now, I have been working on a CAD design of the spacer & it looks like, even adding +8mm to the spacer (normally added above the top spacer, there's not enough material in the spacer to taper down to an eyelet like the VFR bottom mount needs. BUT: The R6 shock is shorter & I think we can make that shock work in the VFR. I still need to model the spacer, but it looks ok on paper. as a bonus for me, I can use the BMW shock in my TRX just needs a different spacer. Link to comment Share on other sites More sharing options...
The Phantom Posted October 21, 2014 Share Posted October 21, 2014 The BMW shock might go pretty well in the Trixie, as it's a fairly lightweight bike. Link to comment Share on other sites More sharing options...
MVinOZ Posted October 21, 2014 Author Share Posted October 21, 2014 About 190kg semi wet IIRC, I'm hoping to get my track VFR not far off that too Link to comment Share on other sites More sharing options...
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