|
Post by Andrew Rowland on Dec 18, 2018 2:20:28 GMT -5
Ok, so some progress has been made. All the parts have been ordered, several from Japan which will take a month to arrive.... and get held up in customs probably! Meanwhile i've been working out how on earth i'm going to get this packaged up. Early on I was going to run the motor up in the bodywork but the pinion would have sat right in the open cockpit AND the COG would have been way too high. Then I realised that the side pods were just the right height to get the motor in. It really is too tight but I dare say i'll make it work somehow. In order to try to keep to the principles of scratch built (whatever that means), i'm going to do the other side pod and the top body in balsawood. So what you see is effectively the chassis but it will double as the lower bodywork as there just isn't space for both. One of the things I have learnt with these 4WD cars is that stiffness and level tyre contact are good things, so the chassis will be stiffened once all the bearing holders etc. go in. There will be a or a series of screw down elements that hold all the bearings down into the chassis and the body will screw up from underneath to cover everything. Last but not least the front diff precludes any sprt of normal guide so i've had to invent my own special low profile version with the scre fitting being at the extreme front of the car and the guide. I'm expecting the guide to need a few iterations before it is suitable for a round the world proxy..... Ok, enough for now:
|
|
|
Post by old23 on Dec 18, 2018 10:50:51 GMT -5
Oh... My... Gawd! This is going to be fun to watch.
|
|
|
Post by tomato007 on Dec 19, 2018 1:57:02 GMT -5
Amazing project. This will be a challenging project also in the respect that this car should be fast as well for the proxy. Best regards Thomas
|
|
|
Post by Aurora on Dec 20, 2018 0:41:22 GMT -5
Great stuff Andi! Your design choices and engineering solutions are always very entertaining. This will be enjoyable to watch. Matt
|
|
|
Post by Andrew Rowland on Dec 29, 2018 16:49:58 GMT -5
Well things have moved on and I have ordered a print form Shapeways of both the chassis and the guide. Fitting the diffs in was very difficult in such a narrow body. I have had to work to very fine tolerances and this has made the bodywork very flimsy around the front axle 'wing' connection points. I have therefore had to incorporate a part fo the nose bodywork into the 3D print. Similarly at the rear both side pods have had to be used to hide the mechanicals. It still gives me the majority of the bodywork to hand carve however. I hope i've thought of everything. I am most worried that I won't be able to get the motor in! I may end up having to cut pieces out to get it seated in place….. Still having fun, hope it is all worth it. Some of the parts have arrived but others are still weeks away apparently. The body should arrive in 2 weeks or so. I'll update after that.
|
|
|
Post by tomato007 on Dec 30, 2018 10:39:25 GMT -5
Wow. I‘m waiting for the first „real“ images. I can‘t await to learn more about the configuration around the front crown and the guide. Best regards Thomas
|
|
|
Post by Andrew Rowland on Jan 10, 2019 2:30:30 GMT -5
So the print arrived yesterday. A bit tricky to photograph without natural light at this time of year..... Motor fits perfectly. A bit of work needed to some minor areas but generally seems to have worked. Now i'm looking forward to carving the rest of the body. I might spray the print white so I can see the form better. Still waiting some components so progression on the mechanical side will be limited for a while. Cheers Andi
|
|
|
Post by David Mitcham on Jan 11, 2019 3:48:19 GMT -5
Remarkable Andi. I really admire the way you are combining modern and innovative engineering and design with more traditional methods.
Best Regards
David
|
|
|
Post by Andrew Rowland on Jan 11, 2019 8:13:43 GMT -5
Thanks David, and so it begins....
|
|
|
Post by f143 on Jan 11, 2019 21:17:36 GMT -5
Great project Andi thanks for showing. Regards Nigel
|
|
|
Post by Andrew Rowland on Jan 13, 2019 17:58:02 GMT -5
Starting to look like a slot car. Andi
|
|
|
Post by EM on Jan 13, 2019 22:59:23 GMT -5
I believe there is a (very brief) glimpse of the Miller in this old film
link
EM
|
|
|
Post by Andrew Rowland on Jan 14, 2019 2:18:21 GMT -5
Interesting, its at 6:32. I think my side tanks might be slightly too narrow and the nose slightly wide.... not much to do about that now. Still within the 1mm rule anyway What is easy to miss is that I believe this was the first rear engined Indy 500 car to qualify for the race. Cheers Andi
|
|
|
Post by Andrew Rowland on Feb 5, 2019 2:51:37 GMT -5
I've seen a lot of conversation about louvres on this forum for these pre war cars. When faced with the issue myself I decided to buy some quarter round plastic form and shape each individual louvre and then glue it on. The louvres are 0.75mm radius which is out of scale somewhat but given how small they are i'm not sure how well I could have done them smaller! This was anyhow the smallest the shop had.... Things on the body are now coming to completion and i'm working to complete it over the next two weeks before the final 3D chassis print arrives. Cheers Andi
|
|
|
Post by Aurora on Feb 6, 2019 1:24:05 GMT -5
Andi, A real challenge those pesky louvers. Good to see varied approaches to the problem, thanks for posting your solution. Was 3d printing the louvers onto the shell an option for you? Matt
|
|