interesting. what parts are proprietary in a revmaster that are not in a GP?
On Tue, Jun 21, 2016 at 4:56 PM, Mike Stirewalt via KRnet <krnet at list.krnet.org> wrote: > A year or two ago, someone with a new Revmaster - I think it was the > R-2300 - sent us a picture of head/valve damage he had suffered with his > new engine. Someone else was referenced at that time who had the same > problems with that engine. > > How could that happen? Nobody knows the VW better than Revmaster Joe yet > here were people having serious issues with their new (and really nice) > R-2300 engines. > > There's plenty of people flying that engine who don't have those > problems, so how does this sort of thing happen? > > I can postulate just how - > > Somebody there at the shop in Hesperia took parts off the shelf to put > the engine together like they'd done dozens or maybe hundreds of times > before. I doubt Joe Horvath does assembly these days, but I'm just > guessing. I doubt whoever put the troublesome engines together did > anything wrong - but I'd also bet they didn't put the engine together as > carefully as a person would who was going to fly behind it. I'd bet they > just took the valves out of their boxs and put them in. I'd bet they > didn't use any dykem to check the seats with each valve . . . and how > carefully did they torque the head studs? There's all sorts of little > but critical things that need to be done with great care in assembling an > aircraft engine and somehow I just don't have the confidence to trust > that whoever assembles engines at the shop is taking the same care that I > would in putting the engine together myself. > > That R-2300 looks to me like a wonderful engine - but it needs to be put > together perfectly. These engines get sold already assembled so if I > bought one the first thing I'd do with it is get all the manuals and take > the thing completely apart then put it back together, incorporating any > improvements it might need. As Jeff Scott has said, that needs to be > done with any new and unknown engine. Notice this engine is rated for > continuous power of 80 HP at 3000 RPM. Max RPM is 3200. I really > appreciate that this engine has been designed to operate at the perfect > RPM for a VW. > > I haven't priced what an equivalently-equipped Great Plains engine costs > these days but I imagine it'll work out about the same as what Joe wants > for these R-2300 Revmasters. GP appeals to me more because it is bought > as a kit, so you KNOW how it's been put together. Plus, parts are not > proprietary. Looks to me though that a lot more engineering has gone > into the design of the R-2300 - rather than just increasing displacement. > I'm reading just now that GP's 2300 (actually 2276cc) is "optimized" to > operate between 3200 and 3600 RPM. Since I know 3200 is the very top of > where I want to run my engine, both for prop tip mach speed issues and > internal friction heat issues, I think I'd rather have an engine that's > been engineered to operate at an RPM that will keep it cool and where it > is most efficient. I'd buy that R-2300, take it all apart and put an > Ellison on it if I were choosing between the two. It's gorgeous. > > Mike > KSEE > > > ____________________________________________________________ > Blazeray > Deemed: One Household Item Everyone Should Have In Any Emergency > http://thirdpartyoffers.juno.com/TGL3141/5769aa518cbb92a513765st02vuc > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options