2:05. I totally agree with you on all you said about the gear driven cams, but as a former NC30 owner and a current RC36-2 owner, I must say that I’m happy to pay a bit more to, carry a bit extra weight from the gears as the sound makes me smile. The RC36 is red lining at 11500 rpm, so absolutely no need for gear drive, but the history of racing V4 Honda engines just makes them nice to have. Thanks for sharing, the SP1 looks better and better with each episode going by. Cheers from Denmark Tomas
I know I'm late to the party but I'm really enjoying the snow. As a former owner of a States model RC30 (#236). I have a soft spot for RC series of bikes. I'm also a hobbits restoration tinkerer. Cheers mate 👍
Fantastic bikes, I love them but, look at the state of the welding on the frame above the engine, looks like someone had run a line of plasticine along it. Thanks for the videos.
@obsessionengineering please can you confirm the order of plates/springs for this modification. Your video suggests friction plate 25 (22202MAT000) goes on the stack first, followed by 24 (22125MAT000 SEAT,JUDDER SPG) then 26 (22402MAT000 SPG,JUDDER) But the parts fiche shows the 2 springs going on the stack first then followed by 25 friction, 7 pressure plate and so on?
Very different bikes, I actually think the 749 is more exciting to ride but both are really good. For decent sp1 money you'd get a very nice 749s or maybe even an R
Can you please show us a trustfull source of the valve clearance tolerances of +/- 0,03mm from IN/EX for the SC45A? In my genuine Honda VTR 1000 SP-Y Service Manual there are no valve tolerances shown! For service there are only fixed valve clearances for IN: 0,16mm and EX: 0,31mm with explicit NO service limit! Would be pretty great if you could confirm these tolerances! Thank you so far for this nice restauration!
I'm sure I read it in my service manual but don't have it to hand to double check. Realistically there has to be a tolerance, it's normal engineering practice and 0.06mm is fairly typical for valve clearances across most manufacturers. Having built hundreds of road and race engines I can assure you the +/- 0.03 on these clearances is more than safe. I've regularly built race engines with 0.10mm inlet clearances and exhausts typically in the 0.20-0.30 range. Inlets don't have the same heat expansion as exhausts, hence being able to run smaller clearances.
Excellent work to a classic Dave! This bike is going to look & run fantastic! Did you use just elbow grease to polish up the covers? Good for you because they have come up a real treat!
I love these engines. As old people say “ They don’t make them like that any more!”
2:05. I totally agree with you on all you said about the gear driven cams, but as a former NC30 owner and a current RC36-2 owner, I must say that I’m happy to pay a bit more to, carry a bit extra weight from the gears as the sound makes me smile. The RC36 is red lining at 11500 rpm, so absolutely no need for gear drive, but the history of racing V4 Honda engines just makes them nice to have.
Thanks for sharing, the SP1 looks better and better with each episode going by.
Cheers from Denmark
Tomas
Nice job, I wish I could send my bike over for this treatment.
I know I'm late to the party but I'm really enjoying the snow.
As a former owner of a States model RC30 (#236). I have a soft spot for RC series of bikes.
I'm also a hobbits restoration tinkerer.
Cheers mate 👍
Thanks for these Dave, Always enjoy your videos pal!
It’s great , love what you do , but, would like to see you do a bit more of the hands on work , rather than before and after . 👍
Enjoying the build Dave another great series 👍
Fantastic bikes, I love them but, look at the state of the welding on the frame above the engine, looks like someone had run a line of plasticine along it.
Thanks for the videos.
Enjoying this series Dave roll on the next part
Awesome stuff Dave bikes looking good 👍
Great video 🇬🇧👍
I wish my Ducati was that simple ..
Great Job !!!
cool! "just slip it in!" cheers.
@obsessionengineering please can you confirm the order of plates/springs for this modification. Your video suggests friction plate 25 (22202MAT000) goes on the stack first, followed by 24 (22125MAT000 SEAT,JUDDER SPG) then 26 (22402MAT000 SPG,JUDDER) But the parts fiche shows the 2 springs going on the stack first then followed by 25 friction, 7 pressure plate and so on?
Been a while so can't entirely remember. I'd say go with the sp2 workshop manual setting
Love the videos H.
What is the part numbers for the clutch mod.
I think mines is not genuine Honda so will it fit?
Regards John
22125MAT000
22202MAT000
22402MAT000
All in at full RRP about £47 in the UK
Hi, I noticed you worked on a 749 also. Which bike would you recommend, the SP1 or 749?
Very different bikes, I actually think the 749 is more exciting to ride but both are really good. For decent sp1 money you'd get a very nice 749s or maybe even an R
Can you please show us a trustfull source of the valve clearance tolerances of +/- 0,03mm from IN/EX for the SC45A?
In my genuine Honda VTR 1000 SP-Y Service Manual there are no valve tolerances shown!
For service there are only fixed valve clearances for IN: 0,16mm and EX: 0,31mm with explicit NO service limit!
Would be pretty great if you could confirm these tolerances! Thank you so far for this nice restauration!
I'm sure I read it in my service manual but don't have it to hand to double check. Realistically there has to be a tolerance, it's normal engineering practice and 0.06mm is fairly typical for valve clearances across most manufacturers. Having built hundreds of road and race engines I can assure you the +/- 0.03 on these clearances is more than safe. I've regularly built race engines with 0.10mm inlet clearances and exhausts typically in the 0.20-0.30 range. Inlets don't have the same heat expansion as exhausts, hence being able to run smaller clearances.
Excellent work to a classic Dave! This bike is going to look & run fantastic! Did you use just elbow grease to polish up the covers? Good for you because they have come up a real treat!
Yes I did, no machine polishing here!
I was looking forward to seeing you change a shim of one of the cams to see how it’s done, typically 🙄you didn’t need to
I was lucky this time! I'm sure there will be a project bike at some point that'll need doing and I'll make sure I show as much detail as possible