Some people on another forum (product reviews) were saying this engine may be used in Redmax brand equipment also.
If you look around you can find this engine (tanaka 7800) with complete blower, reconditioned by factory, for 400-425. The one with the "frame mounted throttle" (not hand operated throttle) is apparently about $20-30 less than the hand-throttle one. If you just want the engine, who cares. I tried looking up clutch info, but all I can find out is it has a "heavy duty centrifugal clutch".
guess we will have to ask a mower shop or Tanaka rep what size clutch it uses.
If you put it on a bicycle, I bet it will be awesome.
I am a fan of Tanaka co, because I LOVE 2 stroke engines, and think its a bunch of BS that people are trying to ban them or regulate them out of existence.
From Tanaka home page:
http://www.tanaka-usa.com/index.php?section=38 (how it works)
CHOICE FOR THE FUTURE
Many people ask us, "When is Tanaka going to build a 4-cycle?" The answer is "We are not!" You don't have to switch to 4-cycle!
Two-stroke is not going away. As other manufacturers push lackluster performing 4-cycle products, Tanaka is committed to providing you with two-stroke powered products now and for the future.
Less moving parts, better power-to-weight, and outstanding throttle response are just a few of the advantages Tanaka products have over 4-cycle or hybrid 4-cycle powered products. Here are some more:
1. Service Costs
Due to the design elements and the additional internal components, labor costs for service and repairs of 4-cycle engines are considerably higher.
2. Maintenance
Standard compact 4-cycle engines utilize oil reservoirs, however their extremely small capacity requires that the owner check it constantly and change it regularly. Since these engines do consume oil, the likelihood of lubrication related failure is significantly higher.
3. Power-to-Weight
Two-stroke engines are usually smaller in size and up to 30 percent lighter than compact 4-cycle engines with the same power rating.
4. Performance
Tanaka two-stroke engines provide more usable power and torque at RPMs most suitable for effectively powering handheld products.
5. Internal Components
Compact 4-cycle engines utilize four times the amount of components as Tanaka two-stroke engines. Many of which are moving and subject to excessive wear.