Round cylinder fins?
- Thread starter Russell
- Start date
The HT 66's I've seen have always had square fins. I've seen suppliers in China that offer a 48cc with a round head but there are no retail outlets in the US that I have found. Hope that helps. If you are after that round-headed vintage look, you might wanna talk to a european member about scoring a russian engine. Peace
-LS
-LS
The grubee skyhawk gt2b had a round cylinder fin and head. I like it too but they are discontinued or sold out that grubee dealers hear.
As long as you don't get carried away, you can grind the corners off the fins to give the cylinder a more rounded appearance. The aluminum is easy to remove with a side grinder and a 'flapper wheel' type of abrasive. The loss of cooling ability shouldn't effect the engine unless you're riding style includes long periods of idling or slow riding under a load in high ambient temperatures.
A rule of thumb in the case of a heat exchanger, which the cooling fins are, is that you can eliminate as much as 10% of the surface area without seriously compromising its ability to transfer heat, except in extreme conditions.
Tom
A rule of thumb in the case of a heat exchanger, which the cooling fins are, is that you can eliminate as much as 10% of the surface area without seriously compromising its ability to transfer heat, except in extreme conditions.
Tom
yeah it will - I aesthetically love the round fins and did some research on where to buy them. You can buy them direct from "Jiangdu woodpecker gasoline engine factory" for $170 shipped fedex to the US.
thx Moto, i just did a full rebuild on my engine with the square cylinder and now im welding a custom frame with 20in moped wheels. For my next motor i will get a grubee starfire case with the 6032 bearings and see if i can use a puch e50 crankshaft with a puch e50 top end.
