|
Post by ianboom on Feb 14, 2012 20:53:22 GMT 1
Well, after 5 months of messing, several hours on the dyno a melted piston (my fault :oops: ) and a few £'s it's all done and finished. I started with 45bhp on a dynopro dyno (52bhp on a dynojet, so make your own mind up what my peak power is now!) Ended up with 70.8bhp @ 9600rpm and 38.7ft/lbs torque @ 9400rpm Stock drilled airbox with stock filter, stock carbs too! Full spec at the bottom. Thanks to Kenny at TSA, Glyn at GPL racing, and Kev at dynopro! Ianboom. Spec: RD350YPVS F2 barrels with 1.00mm over bore Mick Abbey fast road tune 50 degree thermostat GPL racing O ringed head TSA stainless road pipes with short carbon cans Stock 26mm Mikunis with 290 left main jet, 280 right main jet. Stock air box/filter with snorkel removed and drilled air box lid Zeeltronic PCD-10V Ignition, power valve controller Stock unwelded crank
|
|
cj
Thrash Merchant
Posts: 418
|
Post by cj on Feb 14, 2012 20:57:51 GMT 1
Can I ask how you determined the offset in jetting?
thinking on me feet - associated to temp? possibly anomalies in vent gas temp (i.e expansion chamber variance)?
|
|
|
Post by ianboom on Feb 14, 2012 20:59:20 GMT 1
With an O2 sensor in each pipe, left hand pot was running a little leaner until I changed the jet.
|
|
cj
Thrash Merchant
Posts: 418
|
Post by cj on Feb 14, 2012 21:01:37 GMT 1
Any idea of O2 accuracy calibration percentage?
|
|
|
Post by ianboom on Feb 14, 2012 21:05:55 GMT 1
Nope none at all ;D that's why I pay someone to operate the dyno. All I do know is in one can it read fine, in the other it was weak, changed the jetting to get the readings similar and got a little more power. Didn't get the stinging eyes, so it's not weak!
|
|
|
Post by ianboom on Feb 14, 2012 21:41:47 GMT 1
Can I ask how you determined the offset in jetting? thinking on me feet - associated to temp? possibly anomalies in vent gas temp (i.e expansion chamber variance)? Had 2 sets of chambers, ms and stainless, both the same. Difference is probably in the porting, this is why any tuner worth their weight will tell you to treat both pots as separate motors.
|
|
lcolin
Thrash Merchant
Posts: 497
|
Post by lcolin on Feb 14, 2012 22:01:52 GMT 1
we all love pictures?
Sounds tasty - i'd love to put a picture to the specs.
|
|
|
Post by ianboom on Feb 14, 2012 22:08:11 GMT 1
we all love pictures? Sounds tasty - i'd love to put a picture to the specs. What sort of pictures?
|
|
|
Post by tsa on Feb 14, 2012 22:33:48 GMT 1
I still look at it and I cant believe how straight the curve is and it pulled well from 3000rpm on the dyno too and in a straight line to boot I was absolutely gobsmacked with how this thing pulled it was so crisp We did a few tests too and found the stainless steel and the mild steel pipes were identical within .5bhp of each other and peaked at the same rpm. We also found that no matter what we did to the PV in the zeel it made no difference to the curve if we set the closed position at 105degrees BTDC or 93 degrees BTDC or if we shifted the opening time from 4000rpm to 5500rpm
|
|
lcolin
Thrash Merchant
Posts: 497
|
Post by lcolin on Feb 14, 2012 23:29:25 GMT 1
we all love pictures? Sounds tasty - i'd love to put a picture to the specs. What sort of pictures? Piccys of the bike - it sounds like a corker from the spec, would be nice to see it.
|
|
|
Post by tsa on Feb 14, 2012 23:52:21 GMT 1
Design for what???
|
|
|
Post by lcrider on Feb 15, 2012 9:15:13 GMT 1
70BHP is very respectable
|
|
|
Post by bigal1 on Feb 15, 2012 15:18:18 GMT 1
70 hp out of a 350lc is very good
|
|
|
Post by ianboom on Feb 15, 2012 19:59:36 GMT 1
Piccys of the bike - it sounds like a corker from the spec, would be nice to see it. Need to get some more photos taken!
|
|
lcolin
Thrash Merchant
Posts: 497
|
Post by lcolin on Feb 15, 2012 20:14:08 GMT 1
Lovely bike. Nice one.
|
|
|
Post by rostrumorhospital on Feb 16, 2012 18:49:33 GMT 1
O yes, she's a beauty, like the black swinger, enjoy!
|
|
richb
Thrash Merchant
Posts: 354
|
Post by richb on Feb 17, 2012 0:01:47 GMT 1
That is one very tasty piece of kit, congratulaions.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 17, 2012 1:02:50 GMT 1
very nice, you've gotta be over the moon.well done
|
|
|
Post by Norbo on Feb 18, 2012 10:09:39 GMT 1
doese'nt it look meen
|
|
hazey
Thrash Merchant
Posts: 391
|
Post by hazey on Feb 23, 2012 22:59:15 GMT 1
70 Brake and looking that good Cant wait for my valve so mick and kenny can do there magic ;D
|
|
|
Post by ianmac on Feb 24, 2012 11:32:15 GMT 1
One of my favourite Lc's, Credit to ya Ian it's a beastie!
|
|
|
Post by rdstars on Feb 24, 2012 11:43:16 GMT 1
Stunning bike with amazing results, well done to all involved and a big pat on the back.
Now how does she feel on the road, pull, spread of power etc, how does it compare to other RD's you have built and rode.
|
|
slot
L plate rider.
Posts: 33
|
Post by slot on Feb 24, 2012 21:00:44 GMT 1
Drool . . . . . . .
|
|
|
Post by ianboom on Feb 27, 2012 17:37:43 GMT 1
Thanks for all the positive comments, if anybody wants to know any specs or advice, drop me a line. I haven't ridden it on the road yet The headlamp bracket was a prototype and has been sent off to have the real thing made from billet ally, so I can't ride the bike at the moment!! Rode it before the last dyno session with around 65bhp, it was trying to lift the wheel in second whilst accelerating, not bad considering the RGV makes the wheelbase a lot longer. Should have the bracket in the next few days, so roll on the warmer weather. Ianboom
|
|
|
Post by bubba on Feb 27, 2012 20:16:00 GMT 1
thats one trick elsie credit to you
|
|
|
Post by atomicstroker on Feb 27, 2012 20:53:47 GMT 1
I think you should sell her ----- TO MEEEEEE!!!!!
|
|
|
Post by Denzil on Feb 28, 2012 8:43:31 GMT 1
Stunning!!!!!
|
|
|
Post by daglad on Mar 1, 2012 23:18:38 GMT 1
That is the nuts mate, yet another quality resto, There really are some talented people on here. 70bhp is not to be sniffed at either well done sir
|
|
|
Post by GoneWithTheWind on Mar 2, 2012 18:10:39 GMT 1
OMFG! that's all I can say!!! how much does the exhaust weigh ? How many kilos did you manage to take off?
|
|
|
Post by tsa on Mar 12, 2012 23:12:58 GMT 1
The exhaust weigh approx 6kg with silencers.
|
|