OS Speed Piston/Linear
11-05-2006 | 11:33 AM
#16
Joined: Nov 2003
Posts: 2,527
From: Harwood, MD
Originally Posted by doki_doki
well, with my experience with os engines, they are very durable. with the right break-in method and tuning you can let these motors run up to about 60 liters without changing anything except for the glow plug 
i know someone who ran the ostz 5ports up to more than 60 liters until the engine finally broke down. the piston was broken. we also noticed that there was a noticeable play between the conrod and crankshaft pin... 
and we quessed that caused the failure...
i know someone who ran the ostz 5ports up to more than 60 liters until the engine finally broke down. the piston was broken. we also noticed that there was a noticeable play between the conrod and crankshaft pin... and we quessed that caused the failure... 
11-05-2006 | 05:26 PM
#17
Originally Posted by Ed Anderson
Unfortunately the US importer says "they are either invalid or discontinued part numbers". Your numbers are probably right, they just don't have their act together. (they used to do the same thing with Kyosho) Seems to be the standard answer if they don't stock something.
11-05-2006 | 06:46 PM
#19
Joined: Mar 2006
Posts: 5,120
From: www.moorebankraceway.com
Originally Posted by Slo-MTX4
I have been told by one of our LHS that you are not able to by a piston and liner for this engine. Single use only. How true it is i dont know but that is what i have been told!
this is not true. there was a printing issue/mistake with the translation of the instruction manual from japanese to english. a friend asked the OS speed people about this and they were suprised and embarrased. there is a part number for it, it is on one of the OS threads
11-05-2006 | 07:51 PM
#20
Originally Posted by Slo-MTX4
I have been told by one of our LHS that you are not able to by a piston and liner for this engine. Single use only. How true it is i dont know but that is what i have been told!
Its possible, but GP is known to say things like that when they don't want to stock something. I myself have had to make the 4/5 hour phone call to them on more then one occasion to get them to order parts (both OS and Kyosho). You get a lot "why do need this" then 15 minutes on hold, then "whats this for", then another 15 minutes then "let me get a supervisor". It just repeats this till they finally say "OK we'll order it".
Be prepared, it'll take a few hours.
12-01-2006 | 06:34 PM
#23
hmm, i dun understand y those online RC shops in HK dun sell these parts. but i got them from HK hobby shops that do not have online sales. i also saw the crankshaft for sale too. its priced slightly more expensive than the piston/linear.
12-03-2006 | 07:01 PM
#24
Joined: Nov 2003
Posts: 2,527
From: Harwood, MD
Originally Posted by uniquexme
hmm, i dun understand y those online RC shops in HK dun sell these parts. but i got them from HK hobby shops that do not have online sales. i also saw the crankshaft for sale too. its priced slightly more expensive than the piston/linear.
Last edited by THE DOCTOR; 12-04-2006 at 04:07 AM.
12-22-2006 | 04:20 PM
#27
yes, its exactly the same as stock crankshaft. rite now, i still have the piston/linear set with me, new, haven't opened, so if anyone wants it urgently, do let me know, i can sell to you 1st, while i get it on my next trip to HK. btw, i m in malaysia.
They'll wind up lossing OS like they did Kyosho.
