Pitster Pro decompression system/lever

[nick150]

how does a pitster pro decompression lever work because i'm confused. I'm planning to upgrade my engine with a big bore kit and apparently you need a decomp lever/system that pitster pro sells which helps stop stripping of the kickstart gear and broken gear boxes. Does anyone know how it works?

Heres the link to it: klx, ttr, crf, decomp cam, decomp levers, decompression system, tagagawa, trail bikes

 

[motovert24]

so i can get a big bore for my motovert with that thingy

 

[wogtaz ryder]

I believe it opens the exhaust valve , when you engage it .. creating less compression making it easier to kick over , making it alot safer on your kickstart gears.

 

[DvDRip]

so i can get a big bore for my motovert with that thingy

no....... why would you think that?

 

[DvDRip]

it looks like you replace your exhaust tappet inspection cover with the new one, when you pull the lever it pushes the valve open which will stop the engine from building compression

 

[sean01]

has anyone tried one of these?

i would of thought the camshaft version would be better...its automatic..like the yz/wr 450's.
altho pister pro version seems fool proof.

DHZ Mini Moto - PITBIKE DE-COMP RACE CAM DHZ D25 Grind YX 150,160cc

 

[Cactus Jack]

^^^^^ I've wondered about those things too ^^^^^

Daimojay had problems with his Takegawa decomp cam ... plus I've read where others knock 'em ...

http://www.miniriders.com.au/tech-talk/13442-stroked-bored-171cc-monster-mini-5.html

Some info with pics showing the Pitster manual decompressor ...

Pitster Pro Forum - View topic - DECOMP SYSTEM FOR BIG BORE MOTORS!!

 

[thump*140]

yeah i cant say i'm a fan of auto decomps running concentric to the cams...
Yes, it makes starting big bore thumpers a simple kick-through affair, but once you've had enough practise, you can kick a manual decomp bike through TDC and start it in the same kick...
The other advantage of a manual decomp is that if the bike needs "clearing out", you can hold the decomp, and kick away until it's cleared... cant be done with an autodecomp, as you will have compression again once the autodecomp releases pressure from the exhaust valve...

more of an Oldschool thumper problem, i must be getting old..
82 XR500 anyone?? click n kick, click n kick