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The version 3 optimization build


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On 1/18/2021 at 3:38 PM, The Phantom said:

Look into having a lexan copy of the headlight glass made up... you'd be astonished at just how heavy that headlight assembly is.

 

4th gen headlight assembly is pretty heavy at 5lbs.... i have been trying to figure out a good alternative.....

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19 hours ago, DannoXYZ said:

Ok, I made spreadsheet with your weight-savings items.
Coming along nicely! :)
https://docs.google.com/spreadsheets/d/1IlaGKrUMjCl69Ahimf0Pa8tvZjr5UwhO1oMCXri0i5Y/edit?usp=sharing

Thanks for that. I haven't posted the pair valve removal weight yet as there are still some pieces attached to the bike I need to get off and I think it may be kind of a pain to get the rear tubes off. Still have the tubes from the airbox down to the valves to get off also. Going to be removing weight on the sprocket cover too as I have it off and cleaned up. Making a list of bolt sizes and lengths to get replacements and a ti axle and nut for the front and I'm still waiting to hear something on the Renthal rear sprocket. It's just time and money.

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On 1/28/2021 at 3:41 AM, RC1237V said:

Wow, where did you get that large Ti bolt?

 

I know Titan Classics in the UK makes them for the VFR400R and the VFR800F (£20-22), but the VFR750F bolt appears to be same diameter--but 2mm longer than the former, so it might not work.  https://titanclassics.com/product/honda-titanium-version-swingarm-pinch-bolt/

 

Ciao,

 

JZH

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42 minutes ago, JZH said:

 

I know Titan Classics in the UK makes them for the VFR400R and the VFR800F (£20-22), but the VFR750F bolt appears to be same diameter--but 2mm longer than the former, so it might not work.  https://titanclassics.com/product/honda-titanium-version-swingarm-pinch-bolt/

 

Ciao,

 

JZH

If I remember right they have a note that says their bolt does not fit the VFR750.

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23 hours ago, JZH said:

 

I know Titan Classics in the UK makes them for the VFR400R and the VFR800F (£20-22), but the VFR750F bolt appears to be same diameter--but 2mm longer than the former, so it might not work.  https://titanclassics.com/product/honda-titanium-version-swingarm-pinch-bolt/

 

Ciao,

 

JZH

The VFR750 bolt appears to be 9mm longer...the link you sent was for a 51mm bolt.

 

 

BOLT, FLANGE (14X60)

90155-MT4-000

 

 

But they do have the 35mm rear axle nut in Ti 😀

 

*Both items not available from Honda USA

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Looks like all the 800's and the CB1000R used a 16X51mm bolt, and all the 750's used the "heavy pig" 16X60 bolt, which is why they weigh more than an 800  😆 

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On 2/1/2021 at 4:43 PM, RC1237V said:

The VFR750 bolt appears to be 9mm longer...the link you sent was for a 51mm bolt.

 

 

BOLT, FLANGE (14X60)

90155-MT4-000

 

 

But they do have the 35mm rear axle nut in Ti 😀

 

*Both items not available from Honda USA

Looks like this one should work for VFR750 (from jefferson's recommendation): https://www.ti64.com/product-p/6435.htm

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Yep, I like that one - I just don't want to start down that road on the Street Fighter. I already did up the DRZ with Ti and Aluminum all over, and it was eye opening as to the cost... I took a few pounds off the bike, but I spent around $500...

20190306_170625.jpg

20190306_170711.jpg

20190306_170725.jpg

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1 hour ago, RC1237V said:

Yep, I like that one - I just don't want to start down that road on the Street Fighter. I already did up the DRZ with Ti and Aluminum all over, and it was eye opening as to the cost... I took a few pounds off the bike, but I spent around $500...

Yeah, replacing nuts & bolts costs A LOT per-gram shaved. Best to actually start from biggest bolts first, such as any solid axles, brake-caliper bolts, sub-frame bolts, etc. On my race Ninja 250, replacing both front & rear wheel-axles with titanium saved 900gm! Honda's got some extremely trick heat-treated hollow chromoly brake-caliper bolts on their CBR600RR. Even hole at end is tapered and beveled! Couldn't believe it 1st time I disassembled brakes. It's as light as Ti bolts! :biggrin:

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I've really been enjoying this thread.  Titanium is such a hard metal and so difficult to work I'm semi-amazed that fasteners made from it are available commercially.  It all looks great. 

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In previous decades, titanium was hoarded by military and any processing done was to mil-spec standards. Thus anything made from Ti would very costly (think $45k hammers and $15k toilet-seats). Additionally, the stronger 6al/4v alloy work-hardened very quickly and it would break machines used to roll steel. So specialised mills were needed to work with it.

 

After the lightening of cold-war tensions in '90s, titanium availability improved greatly and prices dropped significantly. In fact, Russia was so full of titanium, you can walk into any hardware-store and buy titanium shovels and other gardening tools!

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I watched a documentary once about development of the SR-71 - Kelly Johnson knew that titanium was the only metal that would meet the requirements of the plane but it was difficult to obtain.  So the CIA set up fake companies to purchase Ti from the Russians to build planes that later would be flying over their heads spying on them!  Sometimes fact is more entertaining than fiction . . .


Sorry for the hijack - back to the regular programming.   :rolleyes:

  • Haha 2
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22 hours ago, RC1237V said:

The VFR750 bolt appears to be 9mm longer...the link you sent was for a 51mm bolt.

 

 

BOLT, FLANGE (14X60)

90155-MT4-000

 

 

But they do have the 35mm rear axle nut in Ti 😀

 

*Both items not available from Honda USA

 

Very strange!  You're right, but I looked it up online and managed to find the only online parts list with the wrong information: https://www.bike-parts-honda.com/honda-motorcycle/750-MOTO/VFR/1993/VFR750FP/Frame/SWINGARM/13MT4L41/F__2200/2/10242

 

Danno's Ti64 ref looks like a good find: only $20 for the correct bolt.

 

Ciao,

 

JZH

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On 1/28/2021 at 5:17 PM, jefferson said:

Name of the place is Ti64. Very reasonable price for how big it is.

Give a little credit where due. I found it, bought one and it is now installed. I just didn't post a link to it as I'm not sure how to do that exactly.

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1 hour ago, JZH said:

 

Very strange!  You're right, but I looked it up online and managed to find the only online parts list with the wrong information: https://www.bike-parts-honda.com/honda-motorcycle/750-MOTO/VFR/1993/VFR750FP/Frame/SWINGARM/13MT4L41/F__2200/2/10242

 

Danno's Ti64 ref looks like a good find: only $20 for the correct bolt.

 

Ciao,

 

JZH

Might be the only time you're wrong and I'm right - most of the intricacies of these bikes I learned, were from you and others on here......... 

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Got some good news out of the UK today as it looks like my sprocket is going to be shipped. No idea how long it will take to get here. Looking forward to attaching it with the titanium sprocket bolts. Got the front sprocket off and weighed and the difference between the Renthal and stk was .14 lbs. The Renthal is almost too pretty to put on be hidden. The lightening and opening up of the sprocket cover I don't believe will make it much more visible. The sprocket cover is .13 lbs. lighter and I may open up one more area.IMG_0081.thumb.JPG.0c873dedadb4f671a8a3fbc41781f20a.JPGIMG_0094.thumb.JPG.80d353e5fcec77daaee493d2771d8459.JPG

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On 2/1/2021 at 6:53 PM, RC1237V said:

Looks like all the 800's and the CB1000R used a 16X51mm bolt, and all the 750's used the "heavy pig" 16X60 bolt, which is why they weigh more than an 800  😆 

Heavy pig is right. It weighed almost a quarter pound at .22 lbs.

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The sprocket cover cannot be completely cut unless you want to loose the speedo drive, or get a digital speedo...

20201215_170006.jpg

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Some other ideas, lithium battery, slip on exhaust, rear golfer rotor, center stand just looks heavy, I put mine on with a couple Allen keys though the holes when needed, rear subframe, rear shock. lug nuts I remember you can use certain Honda car lug nuts I got black to match the wheel, you can probably find white to match, and they were much lighter. can you replace the condom mirrors with 6th gen, from 5th gen its a bolt on replacement, do you have the rear cowl? TI sprocket nuts and bolts

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5 hours ago, gig said:

Some other ideas, lithium battery, slip on exhaust, rear golfer rotor, center stand just looks heavy, I put mine on with a couple Allen keys though the holes when needed, rear subframe, rear shock. lug nuts I remember you can use certain Honda car lug nuts I got black to match the wheel, you can probably find white to match, and they were much lighter. can you replace the condom mirrors with 6th gen, from 5th gen its a bolt on replacement, do you have the rear cowl? TI sprocket nuts and bolts

All that has been given thought and will be done with time and money. I weighed the lug nuts yesterday and came up with .48 lbs and the muffler weighed 10.55 lbs. I have already located some titanium lug nuts, but their price is bit exorbitant in my opinion. They have the proper seat and are a closed end lug so I may just have to bite the bullet.

I am going to put off a light weight battery until I get a good r/r. I already have the ti sprocket bolts and am just waiting for my aluminum sprocket to get here from the UK.

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7 hours ago, gig said:

Some other ideas, lithium battery, slip on exhaust, rear golfer rotor, center stand just looks heavy, I put mine on with a couple Allen keys though the holes when needed, rear subframe, rear shock. lug nuts I remember you can use certain Honda car lug nuts I got black to match the wheel, you can probably find white to match, and they were much lighter. can you replace the condom mirrors with 6th gen, from 5th gen its a bolt on replacement, do you have the rear cowl? TI sprocket nuts and bolts

I went with titanium studs and aluminium lug-nuts on my Porsche. Saved about 1.75-lbs per corner. That's unsprung weight too, so worth about 2x as much compared to sprung weight.

 

Yeah, lithium battery saved 9-lbs on my CBR600RR. Full-Ti exhaust saved about 6-lbs.

 

On earlier VFR models, you can get one-piece tail-section and remove subframe and seat completely. That's like +10-lbs or so.

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I would love to find aluminum closed end lug nuts with the proper ball seat, but it seems they are unicorn horns. I did read where a guy had aluminum lug nuts machined for the ball seat, but then you still need closed end lug nuts and all that seems to be out there are open end.

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