E H Bentall built numerous small internal combustion engines so I have built the kit by Duncan Models to represent one. This is the last of the three kits I bought from this firm at Kettering earlier this year.
I think I have made more posts than I have really needed (like the roof of the coach) so here is the build of one kit all in one post . . .
The kit cost just £4.50, I thought this was most reasonable and at a glance it seemed to have potential for improvement so a good buy.
Both flywheels had flash but this one also had a shortfall of metal.
Blob of 145 degree solder to fill shortfall. Casting bored and tapped, and mounted on a 6BA bolt as a mandrel, then dressed to suit.
All parts prepared before final assembly.
The cast bosses provided on each side of the body to hold the flywheels were a bit approximate so I cut them off completely and drilled through the casting from side to side. I also remembered to drill a hole to hold the exhaust. The exhaust casting is unchanged.
I bored out the bosses of both flywheels 1/8 inch and pressed in short lengths of brass tube. Their axle is 3/32 inch rod and this will run in the loose piece of 1/8 inch tube. I put a slight flange on the pulley so any drive belt is more likely to stay put and not fall off.
The body casting had two prongs to aid fixing but these didn't line up with the holes in the base so I cut these off too. I added the loop of wire to catch with some glue, and opened up a generous hole in the base. This hole was a bit too generous and the photo shows two the scraps of solder I added and filed down to hide the gap.
I placed the base on a piece of masking tape, filled the hole about three-quarters full with epoxy glue, and placed the body into position. Some Dark Forces went to work to pull the casting clockwise in the runny glue so I added the square to hold things in place.
The epoxy dried clear and has run around the loop of wire.
Bearing tube fixed into place with 100 degree solder. I now have a spare bit for the iron, dedicated to use with low temperature solder. I used this length of rod to check the bearing tube for a square assembly when I tacked it in.
Simple things amuse simple minds and I can amuse myself by spinning the two flywheels.
I have seen Bentall's products (in 2022 and 2023) finished in bare cast iron and painted pale green. I am confident the pale green is authentic but I would like to find out when it came into use before I paint the model.
Indulgent final photo, this was fun to build and I am pleased with the result