My SP1 lightweight - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 59 (permalink) Old 09-25-2014, 01:32 PM Thread Starter
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My SP1 lightweight

still no decent photos, here are a couple taken in France a few weeks ago
seems like a lifetime ago now, back at work






I have owned the bike since 2000, got it when it was 6 months old, still had a blade then and couldn't get on with the sp, put a Hyperpro rear shock on, then a mori link, then revalved the forks and hyperpro spring kit.
Finally it handled, it had the full Akrapovic system on it when i bought it
I crashed it heavily into an uninsured driver maybe 10 11 years ago, broke the frame at the headstock.
Bought a new frame and started rebuilding it....
thorsten provided radiators, airbox and snorkel, rear disc and cable clutch conversion, hyperplates and inspiration.
Bst wheels, skeletalised rear caliper mount, ISR discs, master cylinder and clutch lever.
one off wiring loom, thorsten battery mount, subframe cut down and de lugged, clutch gear shaved down, factory shift kit, hm quick shifter, akra modded 2-1, harris rearsets, tyga top yoke, no ignition switch, harris tank cap
harris clip ons hrc throttle and expansion tank and rear brake res.
almost all nuts and bolts are Ti or alloy.
The original engine had 3rd gear let go, but with the nova transmission and a set of JE pistons recently acquired, a durbahn invisible rear brake, SP2 swinging arm and a set of 7075 axles i reckon somewhere in the high 160 kg's is possible, last time i weighed it it was 180 but that was before i fitted the BST's
It is currently down on power due to i don't lnow what but suspect a wiring problem, so a new loom is being fabricated next week.
What the engine will make with the JE's i don't know, when it was running properly it dyno'd at 137 bhp, so 11:1 and a clean up of the heads should see a little more, coupled to the close ratio box and lack of weight i am looking forward to next years riding
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post #2 of 59 (permalink) Old 09-25-2014, 01:36 PM
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Nice ! I love your wheels !
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post #3 of 59 (permalink) Old 09-25-2014, 02:03 PM Thread Starter
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hyperpro steering damper,stick coils, race weight fibre glass....
the best thing about the BST wheels is it makes it alot easier to haul it about in the mountains, at 50 something you appreciate that :-)
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post #4 of 59 (permalink) Old 09-25-2014, 02:28 PM
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WOW, nice assortments of parts! Dansp1's a great guy.
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post #5 of 59 (permalink) Old 09-25-2014, 02:45 PM Thread Starter
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best mod on the bike? see in the top picture on the flat part of the fairing there is an aerosol lid with a wet chamoix leather in it, nothing worse than pulling out of a petrol stop and getting one of those big French custard pie insects splat on your visor, quick wipe with a wet chammy and no time lost, tested up to a steady 170

Thanks ogiehooker! it was a pleasure dealing with you, as it has been with anybody i have dealt with on the forum

Last edited by dansp1; 09-25-2014 at 02:48 PM.
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post #6 of 59 (permalink) Old 09-25-2014, 02:51 PM Thread Starter
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silencing gears junked, 520 Afam or jt alloy rear sprocket renthal superlight front...
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post #7 of 59 (permalink) Old 10-07-2014, 12:30 PM
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That some very nice mods - and amazing weightsavings. Ive got the bug too, weighing everything that comes on and goes off.

Is that 180 without fuel?

From what Ive weighed Ive removed 28kgs, and it still came in around 200kg with a full tank. Guess I better start buying titanium bolts and nuts :-)

http://www.facebook.com/HondaSP1 - my little build :-)
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post #8 of 59 (permalink) Old 10-07-2014, 12:48 PM Thread Starter
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no thats 180 with fuel :-) i am hoping for 165 this winter, use alloy wherever you can, it's lighter and cheaper
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post #9 of 59 (permalink) Old 10-07-2014, 12:51 PM
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Holy crap, that's insane, that's like 20kg more than me, and Im running out of ideas :-)

http://www.facebook.com/HondaSP1 - my little build :-)
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post #10 of 59 (permalink) Old 10-07-2014, 01:03 PM Thread Starter
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god is in the detail!
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